21027573

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1567}}^1$

素因数の和:1654

約数の個数: 32

約数和(自身を含む): 36126720

約数和(自身を除く): 15099147

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1491, 1567, 1917, 4473, 4701, 10969, 13419, 14103, 32907, 42309, 98721, 111257, 296163, 333771, 778799, 1001313, 2336397, 3003939, 7009191, 21027573]

約数ペア:

[(1, 21027573), (3, 7009191), (7, 3003939), (9, 2336397), (21, 1001313), (27, 778799), (63, 333771), (71, 296163), (189, 111257), (213, 98721), (497, 42309), (639, 32907), (1491, 14103), (1567, 13419), (1917, 10969), (4473, 4701)]